LED (VFD) Displays in LibreELEC

Quote from The Coolest

Kshi

The built in driver in kszaq's build is old and outdated.

I suggest using the newest one available right now. I attached the latest build of the driver and the Kodi add-on you will need for icons and configuration.

This new version doesn't require a device specific DTB file, but a generic entry, which I added to all of kszaq's DTBs in the attached zip.

So replace the DTB on your box with the relevant one from the zip and you should be good to go.

You'll need a vfd.config file, placed in /storage/.config. Get it here: GitHub - arthur-liberman/vfd-configurations: vfd.config - A collection of configuration files for linux devices with a front facing display.

Extract the FD628 Display zip file in your box, then run

Code

sh test_led.sh

This should start the clock on the display.

If it works correctly, you can run

Code

sh install.sh

To make it permanent.

The commands to start the driver/service will be added to the autostart.sh file.

Display More

You are awesome! Thanks so much. I saw this info earlier in this thread but I assumed (wrongly) that it only applied to the 8.90.x builds. Thanks again!

Quote from The Coolest

Code

sh install.sh

Vorke Z6 running 8.2.2.3

Replaced dtb, copied vfd.conf, installed, reboot but service not running

LibreELEC (community): 8.2.2.3 (S912.arm)

S912:~/.config # sh /storage/.local/share/fd628/stop_service.sh

S912:~/.config # insmod /storage/.local/share/fd628/aml_fd628.ko

S912:~ # /storage/.local/share/fd628/FD628Service &

S912:~ # Open device failed.

: No such file or directory

S912:~ # dmesg | grep FD628

[ 14.004274@2] FD628: vfd_gpio_clk: Empty.

[ 14.004287@2] FD628: vfd_gpio_dat: Empty.

[ 14.004292@2] FD628: vfd_gpio_stb: Empty.

[ 14.004297@2] FD628: vfd_chars: Empty.

[ 14.004301@2] FD628: vfd_dot_bits: Empty.

[ 14.004306@2] FD628: vfd_display_type: Empty.

[ 14.004311@2] FD628: Failed to verify FD628 configuration file, attempt using device tree as fallback.

[ 14.004316@2] FD628: fd628_gpio_clk pin entry not found

[ 14.004321@2] FD628: fd628_gpio_dat pin entry not found

[ 14.004325@2] FD628: fd628_gpio_stb pin entry not found

[ 14.004330@2] FD628: can't find fd628_chars list, falling back to defaults.

[ 14.004335@2] FD628: chars_prop = (null)

[ 14.004340@2] FD628: can't find fd628_dot_bits list, falling back to defaults.

[ 14.004344@2] FD628: dot_bits_prop = (null)

[ 14.004350@2] FD628: display.type = 0, display.controller = 0, pdata->dev->dtb_active.display.flags = 0x00

[ 14.004354@2] FD628: can't request gpio of gpio_clk

Edit:

Used files(dtb & conf)

S912:~/lcd # sh install.sh
install.sh: line 27: /storage/.local/share/fd628/FD628Service: Permission denied
S912:~/lcd # sh test_led.sh
No command line options were found, showing usage instructions.
test_led.sh: line 22: ./FD628Service: Permission denied
test_led.sh: line 32: ./FD628Service: Permission denied


S912:~ # dmesg | grep FD628
[   14.918775@2] FD628: vfd_gpio_clk:           #0 = 0x00; #1 = 0x4C; #2 = 0x00;
[   14.918786@2] FD628: vfd_gpio_dat:           #0 = 0x00; #1 = 0x4B; #2 = 0x00;
[   14.918792@2] FD628: vfd_gpio_stb:           #0 = 0x00; #1 = 0x35; #2 = 0x00;
[   14.918799@2] FD628: vfd_chars:              #0 = 0x04; #1 = 0x03; #2 = 0x02; #3 = 0x01; #4 = 0x00;
[   14.918807@2] FD628: vfd_dot_bits:           #0 = 0x00; #1 = 0x01; #2 = 0x02; #3 = 0x03; #4 = 0x04; #5 = 0x05; #6 = 0x06;
[   14.918812@2] FD628: vfd_display_type:       #0 = 0x01; #1 = 0x00; #2 = 0x00; #3 = 0x00;
[   14.918819@2] FD628: "banks" chip found.     base = 155, pin count = 101, pin = 76, offset = 231
[   14.918824@2] FD628: "banks" chip found.     base = 155, pin count = 101, pin = 75, offset = 230
[   14.918828@2] FD628: "banks" chip found.     base = 155, pin count = 101, pin = 53, offset = 208

Don´t know why get the "Permission denied"

Tim_Taylor chmod 755 /storage/.local/share/fd628/FD628Service

Solved

Deleted all an did it again

In my local folder(/storage/lcd) I did chmod FD628Service too, after this sh test_led.sh working fine.

Now i removed the black tape from display

The Coolest

Good job man

Activating my S912 display is nice to have

I will stay on LE 8.2 for a long time .... LE 8.9 is unusable for me

On my X92 box the display works perfect with 8.90.6 and new dtb.img. Did not see (yet any "subtitle stutter".

Tnx for your work!

Only my S912 box has VDF display.

I own three amlogic boxes, but I will never buy one again.

Like chewitt said - just a piece of crap

LE for amlogic seems to be a dead end

Quote from The Coolest

I don't think there's a better option than a S905X right now if you're looking for something cheap that can also do 4K, 10bit and HDR. A $6 usb 3.0 gigabit ethernet and that's all I could really ask for.

Many users are looking about cheap boxes, but they expect to much.

S905X/S912 are at the end of lifecycle - allwinner & rockchip need a lot of development

There is not enough developement power to get an actual kernel etc.

I´m lucky about stable LE8.2 kszaq - this versions will run a couple of years

Hi,

When trying to run install.sh I'm getting this error:-

LibreELEC (community): 8.90.6 (S905.arm)

LibreELEC:~ # cd /storage/lcd

LibreELEC:~/lcd # sh install.sh

insmod: ERROR: could not insert module /storage/.local/share/fd628/aml_fd628.ko: Unknown symbol in module

LibreELEC:~/lcd # Open device failed.

: No such file or directory

I have vfd.conf in /storage/.config/

My box is Sunvell T95M S905X 2GB/8GB. I'm using the latest DTB from adamg and the vfd.conf file I'm using is t95m-gxl-vfd.conf

Cheers.